TY - GEN
T1 - Water disinfection and control strategy of disinfection by-products in electrochemical process
AU - Jung, Yeon Jung
AU - Baek, Ko Woon
AU - Park, Sang Yeon
AU - Oh, Byung Soo
AU - Kang, Albert
AU - Kang, Joon Wun
PY - 2006
Y1 - 2006
N2 - The aim of this study was to investigate the performance of an electrochemical process as an alternative disinfection/oxidation strategy for water treatment, as several oxidants can be simultaneously formed during the process. Studies on electrochemical processes have shown the production of free chlorine, as well as smaller amounts of stronger oxidants, such as ozone, hydrogen peroxide and OH radicals (OH). The key reactive species formed during electrolysis were successfully isolated and detected, employing specifically devised analytical set-ups, which enable the detection of time varied residual oxidants using an on-line real time monitoring scheme. With the use Bacillus subtilis spores, which are used as a biological surrogate of Cryptosporidium oocysts, the inactivation efficiency of an electrochemical method was evaluated. A much improved inactivation rate was observed for Bacillus subtilis spores during the electrochemical process compared to the commonly used disinfection practice, chlorination. Additionally, the formation characteristics of DBPs during electrolysis was studied by monitoring inorganic by-products, such as bromate (BrO3) and chlorate (ClO3).
AB - The aim of this study was to investigate the performance of an electrochemical process as an alternative disinfection/oxidation strategy for water treatment, as several oxidants can be simultaneously formed during the process. Studies on electrochemical processes have shown the production of free chlorine, as well as smaller amounts of stronger oxidants, such as ozone, hydrogen peroxide and OH radicals (OH). The key reactive species formed during electrolysis were successfully isolated and detected, employing specifically devised analytical set-ups, which enable the detection of time varied residual oxidants using an on-line real time monitoring scheme. With the use Bacillus subtilis spores, which are used as a biological surrogate of Cryptosporidium oocysts, the inactivation efficiency of an electrochemical method was evaluated. A much improved inactivation rate was observed for Bacillus subtilis spores during the electrochemical process compared to the commonly used disinfection practice, chlorination. Additionally, the formation characteristics of DBPs during electrolysis was studied by monitoring inorganic by-products, such as bromate (BrO3) and chlorate (ClO3).
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M3 - Conference contribution
AN - SCOPUS:84871502927
SN - 9781604237306
T3 - American Water Works Association - Water Quality Technology Conference and Exposition 2006: Taking Water Quality to New Heights
SP - 70
EP - 80
BT - American Water Works Association - Water Quality Technology Conference and Exposition 2006
T2 - Water Quality Technology Conference and Exposition 2006: Taking Water Quality to New Heights
Y2 - 5 November 2006 through 9 November 2006
ER -